Host-Based Controller Modem AT Command Set

Transcription

1 Data Addendum June 15, 1998 Version 1.1 Host-Based Controller Modem AT Command Set Contents Page Introduction AT Command Summary...2 AT Commands Reference...6 Test and Debug AT Commands...24 AT Commands Reference S-Registers...29 AT FAX Command Set (Class 1 FAX)...36 AT FAX Commands Reference...37 AT Voice Command Set...42 AT Voice Commands Reference...43 AT COMMANDS: SPEAKERPHONE OPERATION...45 AT COMMANDS: TELEPHONE ANSWERING DEVICE...45 AT VOICE COMMAND SET NOT DEFINED IN IS-101 SPECIFICATIONS...48 VOICE MODEM COMMAND EXAMPLES...49 AT DSVD Commands...56 V.25ter AT Commands...57 V.80 AT Commands...59 AT Commands for Homologation Testing and Debugging...61 CONFIGURING FOR DIFFERENT COUNTRIES...63 COUNTRY SPECIFIC HOMOLOGATION PARAMETERS.69 COUNTRY SPECIFIC S REGISTER DEFAULTS...84 CHANGING THE DTMF DIAL SPEED DEFAULT VALUE86 This document specifies the Lucent Technologies MTC AT Command Set for the host-based controller modem products. Note that if a particular modem board does not support a feature (such as voice), then the corresponding commands are disabled for that modem.

2 AT Command Set June 15, 1998 AT Command Summary The following tables summarize the commands implemented by the modem. Commands may be executed when the modem is in COMMAND mode. COMMAND mode is entered upon under one of the following conditions: After power up At the termination of a connection After the execution of a command other than dial or answer commands (ATO or AT&T) Upon the receipt of the ESCAPE SEQUENCE (three consecutive characters matching the contents of S register 2) while on-line mode Upon the on-to-off transition of DTR if &D1, &D2, or &D3 has been set Table 1. AT Command Set Summary Command Description Command Description A/ Repeat last command &J Auxiliary relay options A Answer command &K Local flow control selection B Communication standard setting &M Asynchronous communications mode C Carrier control &Q Asynchronous communications mode D Dial command &S Data set ready (DSR) option E Echo command &T Self-test commands F On-line data character echo command &V View the active configuration H Hook control &W Store current configuration I Request ID information &Y Select stored profile for hard reset L Monitor speaker volume &Z Store telephone number M Monitor speaker mode \A MNP block size N Modulation handshake \B Send break O Return to on-line data mode \G Modem port flow control P Select pulse dialing \J Adjust bits/s rate control Q Result code control \K Set break control T Select tone dialing \N Error control mode selection V DCE response format \Q Local flow control selection W Result code option \R Ring indicator off after answer X Result code selection and call progress \T Inactivity timer monitoring Y Long-space disconnect \V Protocol result code Z Reset and recall stored profile \X XON/XOFF pass through &B V.32 auto retrain %B View numbers in blacklist &C Data carrier detect (DCD) control %C Data compression control &D Data terminal ready (DTR) %E Automatic rate change &F Local factory settings -C Data calling tone &G V.22bis guard tone control -V90 Enable/disable V.90 settings 2 Version 1.0 Lucent Technologies Inc.

3 Data Addendum June 15, 1998 AT Command Summary (continued) Host-Based Controller Modem AT Command Set Table 2. AT Testing and Debugging Command Set Summary Command Description Command Description &&C Write to/read from host interface %T94 Test external DSP RAM &&L Line-to-line loopback %T124 Return to on-chip DSP RAM &&R Write to/read from DSP RAM location %T125 Load K56flex image to external DSP RAM &&S Speaker codec loopback #UD Unimodem diagnostics Table 3. The S-Register Summary Register Default Description S0 0 Automatic answer ring number S1 0 Ring counter S2 43 AT escape character S3 13 Command line termination character S4 10 Response formatting character S5 8 Command line editing character S6 2 Wait before dialing S7 50 Connection completion time-out S8 2 Comma dial modifier time S10 20 Automatic disconnect delay S11 95 DTMF dialing speed S12 50 Escape guard time S14 8 General bit-mapped options status S21 48 V.24 bit-mapped options status S Results bit-mapped options status S24 10 Timer to control sleep mode S28 1 V.34 modulation enable/disable S30 0 Inactivity timer S32 16 Synthetic ring volume S33 0 Synthetic ring frequency S35 0 Data calling tone S36 7 Negotiation fallback S37 0 Dial line rate S38 1 Enable/disable K56flex settings S42* 1 Auto rate S43* 1 Auto mode S48 7 LAPM error control and feature negotiation S89 10 Timer to control sleep mode S90 10 Local phone status S91 15 Line transmit level S108 7 Network codec type * S-registers 42, and 43 are for test and debugging purposes only. Version 1.0 Lucent Technologies Inc. 3

4 AT Command Set June 15, 1998 AT Command Summary (continued) Table 4. The Result Code Summary Result Code Numeric Description 0 Command executed CONNECT 1 Modem connected to line RING 2 A ring signal has been detected NO CARRIER 3 Modem lost carrier signal, or does not detect carrier signal, or does not detect answer tone ERROR 4 Invalid command CONNECT 1200 EC* 5 Connection at 1200 bit/s NO DIALTONE 6 No dial tone detected BUSY 7 Busy signal detected NO ANSWER 8 Remote end never answered CONNECT 2400 EC* 10 Connection at 2400 bit/s CONNECT 4800 EC* 11 Connection at 4800 bit/s CONNECT 9600 EC* 12 Connection at 9600 bit/s CONNECT EC* 13 Connection at bit/s CONNECT EC* 14 Connection at bit/s CONNECT 7200 EC* 24 Connection at 7200 bit/s CONNECT EC* 25 Connection at bit/s CONNECT EC* 86 Connection at bit/s CONNECT 300 EC* 40 Connection at 300 bit/s CONNECT EC* 55 Connection at bit/s CONNECT EC* 56 Connection at bit/s CONNECT EC* 57 Connection at bit/s CONNECT EC* 58 Connection at bit/s CONNECT EC* 59 Connection at bit/s CONNECT EC* 60 Connection at bit/s CONNECT EC* 28 Connection at bit/s (DTE rate) CONNECT EC* 18 Connection at bit/s (DTE rate) CONNECT EC* 87 Connection at bit/s (DTE rate) DELAYED 88 Delay is in effect for the dialed number BLACKLISTED 89 Dialed number is blacklisted BLACKLIST FULL 90 Blacklist is full CONNECT EC* 70 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 71 Connection at bit/s (K56flex mode) CONNECT EC* 72 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 73 Connection at bit/s (K56flex mode) CONNECT EC* 74 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 75 Connection at bit/s (K56flex mode) CONNECT EC* 76 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 77 Connection at bit/s (K56flex mode) CONNECT EC* 78 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 79 Connection at bit/s (K56flex mode) CONNECT EC* 80 Connection at bit/s (K56flex mode) or V.90 CONNECT EC* 81 Connection at bit/s (K56flex mode) CONNECT EC* 82 Connection at bit/s (K56flex mode) CONNECT EC* 100 Connection at bit/s (V.90 mode) 4 Lucent Technologies Inc. Version 1.0

5 Data Addendum June 15, 1998 AT Command Summary (continued) Host-Based Controller Modem AT Command Set Result Code Numeric Description CONNECT EC* 101 Connection at bit/s (V.90 mode) CONNECT EC* 102 Connection at bit/s (V.90 mode) CONNECT EC* 103 Connection at bit/s (V.90 mode) CONNECT EC* 104 Connection at bit/s (V.90 mode) CONNECT EC* 105 Connection at bit/s (V.90 mode) CONNECT EC* 106 Connection at bit/s (V.90 mode) CONNECT EC* 107 Connection at bit/s (V.90 mode) CONNECT EC* 108 Connection at bit/s (V.90 mode) CONNECT EC* 109 Connection at bit/s (V.90 mode) CONNECT EC* 110 Connection at bit/s (V.90 mode) CONNECT EC* 111 Connection at bit/s (V.90 mode) CONNECT EC* 112 Connection at bit/s (V.90 mode) CONNECT EC* 113 Connection at bit/s (V.90 mode) CONNECT EC* 114 Connection at bits/s (V.90 mode) * EC only appears when the extended result codes configuration option is enabled. EC is replaced by one of the following symbols, depending upon the error control method used: V42bis V.42 error control and V.42bis data compression. V42 V.42 error control only. MNP 5 MNP class 4 error control and MNP class 5 data compression. MNP 4 MNP class 4 error control only. NoEC No error control protocol. Version 1.0 Lucent Technologies Inc. 5

6 AT Command Set June 15, 1998 AT Commands Reference AT commands are issued to the modem to control the modem's operation and software configuration. AT commands can only be entered while the modem is in command mode. The format for entering AT commands is: TYPE: ATXn where X is the AT command and n is the specific value for that command. PRESS: Enter If n is omitted from a command that takes a parameter valu, the value 0 I(zero) is assumed. Any command issued is acknowledged with a response in either text or numeric values known as result codes. Table 2 lists all the valid result codes. In the following listing, all commands and command-values accepted by the modem are shown; any entries other than those shown cause the ERROR result code. +++ Escape sequence The escape sequence allows the modem to exit data mode and enter on-line command mode. While in on-line command mode, you may communicate directly to your modem using AT commands. Once you are finished, you may return to data mode using the ATO command. A pause, the length which is set by the Escape Guard Time (S12), must be used before and after an escape sequence is issued. This pause prevents the modem from interpreting the escape sequence as data. The value of the escape sequence character may be changed using Register S2. A/ Repeat Last Command This command repeats the last command string entered. Do not precede this command with an AT prefix or conclude it by pressing Enter. A Answer Command This command instructs the modem to go off-hook and answer an incoming call. Bn Communication Standard Setting This command determines CCITT vs. Bell standard. B0: Selects CCITT V.22 mode when the modem is at 1200 bits/s. B1: Selects Bell 212A when the modem is at 1200 bits/s (default). B2: Unselects V23 reverse channel (same as B3 ). B3: Unselects V23 reverse channel (same as B2 ). B15: Selects V.21 when the modem is at 300 bits/s. B16: Selects Bell 103J when the modem is at 300 bits/s (default). n = 0, 1, 2, 3, 15, 16 ERROR Otherwise Cn Carrier Control The modem will accept the C1 command without error in order to assure backward compatibility with communications software that issues the C1 command. However, this modem does not support the C0 command. The C0 command may instruct some other modems not to send carrier (i.e., it puts them in a receiveonly mode). C0: Transmit carrier always off. C1: Normal transmit carrier switching. n = 1 ERROR Otherwise 6 Version 1.0 Lucent Technologies Inc.

7 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set Dn Dial This command instructs the modem to begin the dialing sequence. The dial string (n, including modifiers and the telephone number) is entered after the ATD command. A dial string can be up to 60 characters long. Any digit or symbol (0 9, *, #, A, B, C, D) may be dialed as touchtone digits. Characters such as spaces, hyphens, and parentheses do not count they are ignored by the modem and may be included in the dial string to enhance readability. The following may be used as dial string modifiers: L Redials last number. Should be the first character following ATD, ignored otherwise. P Pulse dialing. T Touch-tone dialing (default)., Pause during dialing. Pause for time specified in Register S8 before processing the next character in the dial string. W Wait for dial tone. Modem waits for a second dial tone before processing the dial string. V The modem switches to speakerphone mode and dials the number. An ATH command may be used to disconnect the voice Wait for quiet answer. Wait for five seconds of silence after dialing the number. If silence is not detected, the modem sends a NO ANSWER result code back to the user.! Hook flash. Causes the modem to go on-hook for 0.5 seconds and then return to off-hook. ; Return to command mode. Causes the modem to return to command mode after dialing the number, without disconnecting the call. ^ Disable data calling tone transmission. S=n Dial a telephone number previously stored using the &Zn=x command (see the &Zn=x command for further information). The range of n is 0 3. $ Bong tone detection En Echo Command This command controls whether or not the characters entered from your computer keyboard are echoed back to your monitor while the modem is in command mode. E0: Disables echo to the computer. E1: Enables echo to the computer (default). n = 0, 1 ERROR Otherwise Fn Online Data Character Echo Command This command determines if the modem will echo data from the DTE. This modem does not support the F0 version of the command. However, the modem will accept F1, which may be issued by older communication software, to assure backward compatibility. F0: Online data character echo enabled (NOT SUPPORTED). F1: Online character echo disabled. Version 1.0 Lucent Technologies Inc. 7

8 AT Command Set June 15, 1998 AT Command Reference (continued) n = 1 ERROR Otherwise Hn Hook Control This command instructs the modem to go on-hook to disconnect a call, or off-hook to make the phone line busy. H0: Modem goes on-hook (default). H1: Modem goes off-hook. n = 0, 1 ERROR Otherwise In Request ID Information This command displays specific product information about the modem. I0: Returns modem identity string and driver version number, same as I3. I1: Calculates ROM checksum and displays it on the DTE. I2: Performs a ROM check and calculates and verifies the checksum displaying or ERROR. I3: Returns modem identity string and driver version number, same as I0. I4: Returns firmware version for data pump. I5: Returns the board/firmware ID and country ID in hexadecimal (for Apollo). Returns the code ver, board ID, country ID and subsystem vendor ID in hexadecimal (for MARS). I6-8: Returns for compatibility. I9: Returns country ID in English. I11: Displays connection information as described in the following example. As described n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11 ERROR Otherwise 8 Lucent Technologies Inc. Version 1.0

9 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set The ATI11 result has two pages; the user must hit a key to get the second page. See the following example: ati11 Description K56flex connection V.90 Connection Last Connection 56K V.90 2 Initial Transmit Carrier Rate Initial Receive Carrier Rate Final Transmit Carrier Rate Final Receive Carrier Rate Protocol Negotiation Result LAPM LAPM 7 Data Compression Result V42bis V42bis 8 Estimated Noise Level Receive Signal Power Level (-dbm) Transmit Signal Power Level (-dbm) Round Trip Delay (msec) 4 4 Press any key to continue; ESC to quit. 12 Near Echo Level (-dbm) NA NA 13 Far Echo Level (-dbm) NA NA 14 Transmit Frame Count Transmit Frame Error Count Receive Frame Count Receive Frame Error Count Retrain by Local Modem Retrain by Remote Modem Call Termination Cause Robbed-Bit Signaling Digital Loss (db) Remote Server ID 4342C3 NA The ATI11 command may be issued from on-line command mode or after the end of a call. After a call, some of the values are no longer valid; it's useful to know which ones. Each of the line items in the ATI11 result is explained next: 1. V.90, 56K, V.34, or V.32 depending on the type of connection negotiated. 2. Initial upstream rate 3. Initial downstream rate 4. Current or final upstream rate 5. Current or final downstream rate 6. LAPM or MNP or None, depending on V.42 negotiation 7. V42bis or MNP or None, depending on V.42 negotiation 8. Mean-square error of received downstream signal. Difference between received constellation point and reference decision point. This is a dimensionless decimal number, only valid during a call. Higher numbers are worse. There's no absolute threshold of goodness; it depends on the downstream data rate. The number varies during a call, so it can be useful to sample it a few times. 9. The received signal power, although labeled -dbm, is only a relative measure for comparing calls to/from different locations. Only valid during a call. 10. Upstream transmit signal power. 11. Round-trip delay in milliseconds. 12. Echo levels are valid for V.34 only. 13. Echo levels are valid for V.34 only. 14. Number of LAPM frames sent upstream during this call. Count wraps around at Number of REJ frames received at the analog client modem. 16. Number of LAPM frames received by client during this call. Count wraps around at Number of frames received in error by the client. 18. Number of retrains or rate renegotiations requested by this modem. 19. Number of retrains or rate renegotiations requested by remote modem. Version 1.0 Lucent Technologies Inc. 9

10 AT Command Set June 15, 1998 AT Command Reference (continued) 20. Reason for call ending, only valid after call ends: 0 = Local modem command: ATH, DTR drop 1 = Remote modem: cleardown, loss of signal 2 = No answer, busy, etc. 3 = Training failure V.90, K56flex or V = Protocol failure if required by \N4, for example. 21. For PCM connection only, a hexadecimal 6-bit pattern of T1 frames with robbed-bit signaling. 22. For PCM connection only, the downstream digital loss. 23. For K56flex connection only, the V.8bis info sent by the server. Meaning is defined at the server and by convention. Example above is from a recent Ascend MAX in µ-law. Ln Monitor Speaker Volume This command sets speaker volume to low, medium, or high. L0: Selects low volume. L1: Selects low volume. L2: Selects medium volume (default). L3: Selects high volume. n = 0, 1, 2, 3 ERROR Otherwise Mn Monitor Speaker Mode This command turns the speaker on or off. M0: The speaker is off. M1: The speaker is on until the modem detects the carrier signal (default). M2: The speaker is always on when modem is off-hook. M3: The speaker is on until the carrier is detected, except while dialing. Nn n = 0, 1, 2, 3 ERROR Otherwise Modulation Handshake This command controls whether or not the local modem performs a negotiated handshake at connection time with the remote modem when the communication speed of the two modems is different. N0: When originating or answering, this is for handshake only at the communication standard specified by S37 and the ATB command. N1: When originating or answering, begin the handshake only at the communication standard specified by S37 and the ATB command. During handshake, fallback to a lower speed may occur (default). n = 0, 1 ERROR Otherwise 10 Lucent Technologies Inc. Version 1.0

11 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set On P Return On-line to Data Mode O0: Instructs the modem to exit on-line command mode and return to data mode (see AT Escape Sequence, +++). O1: This command issues a retrain before returning to on-line data mode. O3: This command issues a rate renegotiation before returning to on-line data mode. n = 0, 1, 3 ERROR Otherwise Select Pulse Dialing This command configures the modem for pulse (non touch-tone) dialing. Dialed digits are pulsed until a T command or dial modifier is received. Tone dial is the default setting. Qn Result Code Control Result codes are informational messages sent from the modem and displayed on your monitor. Basic result codes are, CONNECT, RING, NO CARRIER, and ERROR. The ATQ command allows the user to turn result codes on or off. Q0: Enables modem to send result codes to the computer (default). Q1: Disables modem from sending result codes to the computer. n = 0, 1 ERROR Otherwise T Select Tone Dialing This command instructs the modem to send DTMF tones while dialing. Dialed digits are tone dialed until a P command or dial modifier is received. This is the default setting. Vn DCE Response Format This command controls whether result codes (including call progress and negotiation progress messages) are displayed as words or their numeric equivalents. For the result code, see table 4. V0: Displays result codes as digits. V1: Displays result codes as text (default). n = 0, 1 ERROR Otherwise ATV0 ATV1 Result Code Format <numeric code> <CR> <CR> <LF> <verbose code> <CR> <LF> Version 1.0 Lucent Technologies Inc. 11

12 AT Command Set June 15, 1998 AT Command Reference (continued) Wn Result Code Option W0: CONNECT result code reports DTE receive speed. Disable protocol result codes. W1: CONNECT result code reports DTE receive speed. Enable protocol result codes. W2: CONNECT result code reports DCE receive speed. Enable protocol result codes (default). n = 0, 1, 2 ERROR Otherwise Xn Result Code Selection and Call Progress Monitoring This command enables tone detection options used in the dialing process. As these functions are chosen, the modem chip set s result codes are also affected. Therefore, this command is frequently used to control the modem chip set s responses. The primary function of this control is to control the modem chip set s call response capabilities. Ext. Result Code Dial Tone Detect Busy Tone Detect X0 Disable Disable Disable X1 Enable Disable Disable X2 Enable Enable Disable X3 Enable Disable Enable X4 Enable Enable Enable (default) X5 Enable Enable Enable X6 Enable Enable Enable X7 Disable Enable Enable Extended Result Codes Disabled: Enabled: Dial Tone Detect Disabled: Enabled: Busy Tone Detect Disabled: Enabled: Displays only the basic result codes, CONNECT, RING, NO CARRIER, and ERROR. Displays basic result codes, along with the connect message and the modem's date rate, and an indication of the modem's error correction and data compression operation. The modem dials a call regardless of whether it detects a dial tone. The period of time the modem waits before dialing is specified in register S6. The modem dials only upon detection of a dial tone, and disconnects the call if the dial tone is not detected within 10 seconds. The modem ignores any busy tones it receives. The modem monitors for busy tones. n = 0, 1, 2, 3, 4, 5, 6, 7 ERROR Otherwise 12 Lucent Technologies Inc. Version 1.0

13 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set Yn Long Space Disconnect Long space disconnect is always disabled. Y0: Disable long space disconnect (default). Y1: Enable long space disconnect (NOT SUPPORTED). n = 0 ERROR Otherwise Zn Recall Stored Profile This command instructs the modem chip set to go on-hook and restore the profile saved by the last &W command. Either Z0 or Z1 restores the same single profile. n = 0, 1 ERROR Otherwise &Bn V.32 Auto Retrain This modem always auto retrains. &B0: Disable V.32 auto retrain (NOT SUPPORTED). &B1: Enable V.32 auto retrain (default). n = 1 ERROR Otherwise &Cn Data Carrier Detect (DCD) Control Data Carrier Detect is a signal from the modem to your computer indicating that the carrier signal is being received from a remote modem. DCD normally turns off when the modem no longer detects the carrier signal. &C0: The state of the carrier from the remote modem is ignored. DCD circuit is always on. &C1: DCD turns on when the remote modem's carrier signal is detected, and off when the carrier signal is not detected (default). n = 0, 1 ERROR Otherwise Version 1.0 Lucent Technologies Inc. 13

14 AT Command Set June 15, 1998 AT Command Reference (continued) &Dn DTR Control This command interprets how the modem responds to the state of the DTR signal and changes to the DTR signal. &D0: Ignore. The modem ignores the true status of DTR and treats it as always on. This should only be used if your computer does not provide DTR to the modem. &D1: If the DTR signal is not detected while in on-line data mode, the modem enters command mode, issues result code, and remains connected. &D2: If the DTR signal is not detected while in on-line data mode, the modem disconnects (default). &D3: Reset modem on the on-to-off DTR transition. n = 0, 1, 2, 3 ERROR Otherwise &Fn Load Factory Settings This command loads the configuration stored and programmed at the factory. This operation replaces all of the command options and the S-register settings in the active configuration with factory default values. Note: In voice mode (AT+FCLASS=8), if the AT&F command is placed on the same line as other commands, the command line is ignored. To load factory settings in voice mode, issue AT&F by itself. n = 0 ERROR Otherwise &Gn V.22bis Guard Tone Control This command determines which guard tone, if any, to transmit while transmitting in the high band (answer mode). This command is only used in V.22 and V.22bis mode. This option is not used in North America and is for international use only. &G0: Guard tone disabled (default). &G1: Sets guard tone to 550 Hz. &G2: Sets guard tone to 1800 Hz. n = 0, 1, 2 ERROR Otherwise &Jn Auxiliary Relay option &J0: The auxiliary relay is never closed. (Default) &J1: NOT SUPPORTED n = 0 ERROR Otherwise 14 Lucent Technologies Inc. Version 1.0

15 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set &Kn Local Flow Control Selection &K0: Disable flow control &K1: Reserved &K2: Reserved &K3: Enable RTS/CTS (hardware) flow control (default) &K4: Enable XON/XOFF flow control n = 0, 3, 4 ERROR Otherwise &Mn &M0: &M1: &M2: &M3: &M4: Asynchronous Communications Mode Asynchronous mode (default). Reserved Reserved Reserved Reserved n = 0 ERROR &Pn Otherwise Pulse Dial Make-to-Break Ratio Selection This Command is effective only for Japan. &P0 39/61 make/break ratio, 10PPS &P1 33/67 make/break ratio, 10PPS (default) &P2 33/67 make/break ratio, 20PPS n = 0, 1, 2 ERROR Otherwise &Qn Asynchronous Communications Mode &Q0: Asynchronous Mode, buffered. Same as \N0. &Q5: Error Control Mode, buffered (default). Same as \N3. &Q6: Asynchronous Mode, buffered. Same as \N0. &Q8: MNP error control mode. If an MNP error control protocol is not established, the modem will fallback according to the current user setting in S36. &Q9: V.42 or MNP error control mode. If neither error control protocol is established, the modem will fallback according to the current user setting in S36. n = 0, 5, 6, 8, 9 ERROR Otherwise Version 1.0 Lucent Technologies Inc. 15

16 AT Command Set June 15, 1998 AT Command Reference (continued) &Sn Data Set Ready (DSR) Option This command selects DSR action. &S0: DSR always ON (default). &S1: DSR comes on when establishing a connection and goes off when the connection ends. n = 0, 1 ERROR Otherwise &Tn Self-Test Commands This command allows the user to perform diagnostic tests on the modem. These tests can help to isolate problems when experiencing periodic data loss or random errors. &T0 Abort. Stops any test in progress. &T1 Local analog loop. This test verifies modem operation, as well as the connection between the modem and computer. Any data entered at the local DTE is modulated, then demodulated, and returned to the local DTE. To work properly, the modem must be off-line. &T3 Local digital loopback test. &T6 Remote digital loopback test. This test can verify the integrity of the local modem, the communications link, and the remote modem. Any data entered at the local DTE is sent to, and returned from, the remote modem. To work properly, the modems must be on-line with error control disabled. n = 0 CONNECT n = 1, 3, 6 ERROR Otherwise 16 Lucent Technologies Inc. Version 1.0

17 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set &V View Active Configuration and Stored Profile This command is used to display the active profiles. For example: Option Selection AT Cmd Comm Standard Bell B CommandCharEcho Enabled E Speaker Volume Medium L Speaker Control OnUntilCarrier M Result Codes Enabled Q Dialer Type Tone T/P ResultCode Form Text V ExtendResultCode Enabled X Dial Tone Detect Enabled X Busy Tone Detect Enabled X LSD Action Standard RS232 &C DTR Action Standard RS232 &D Press any key to continue; ESC to quit. Option Selection AT Cmd V22b Guard Tone Disabled &G Flow Control Hardware &K Error Control Mode V42, MNP, Buffer \N Data Compression Enabled %C AutoAnswerRing# 0 S0 AT Escape Char 43 S2 CarriageReturnChar 13 S3 Linefeed Char 10 S4 Backspace Char 8 S5 Blind Dial Pause 2 sec S6 NoAnswer Timeout 50 sec S7, Pause Time 2 sec S8 Press any key to continue; ESC to quit. Option Selection AT Cmd No Carrier Disc 2000 msec S10 DTMF Dial Speed 95 msec S11 Escape GuardTime 1000 msec S12 Data Calling Tone Disabled S35 Line Rate S37 DSVD mode Disabled -SSE Stored Phone Numbers &Z0= &Z1= &Z2= &Z3= Version 1.0 Lucent Technologies Inc. 17

18 AT Command Set June 15, 1998 AT Command Reference (continued) &Wn Store Current Configuration This command stores certain command options and S-register values except S3, S4, and S5. The ATZ command or a power-up reset of the modem restores this profile. n = 0 ERROR Otherwise &Yn Select Stored Profile for Hard Reset This command does not change the behavior of the modem but is included for compatibility with applications that issue the &Y0 command &Y0: Select stored profile 0 on power-up &Y1: ERROR n = 0 ERROR Otherwise &Zn=x Store Telephone Number This command is used to store up to four dialing strings for later dialing. The format for the command is &Zn = stored number where n is the location 0 3 to which the number should be written. The dial string may contain up to 40 characters. The ATDS = n command dials using the string stored in location n. n = 0, 1, 2, 3 ERROR Otherwise \An Select Maximum MNP Block Size The modem will operate an MNP error corrected link using a maximum block size controlled by the parameter supplied. \A0: 64 characters. \A1: 128 characters. \A2: 192 characters. \A3: 256 characters (default). n = 0, 1, 2, 3 ERROR Otherwise \Bn Transmit Break to Remote In non-error-control mode, the modem will transmit a break signal to the remote modem with a length in multiples of 100ms according to parameter specified. The command works in conjunction with the \K command. \B1 - \B9: Break length in 100ms units. (Default = 3.) (Non-error-control mode only.) If connected in data modem mode. NO CARRIER \G Modem Port Flow Control If not connected or connected in fax modem mode. \G0: Modem process XON/XOFF flow control characters locally (default). \G1: Modem passes XON/XOFF flow control characters. n = 0, 1 ERROR Otherwise 18 Lucent Technologies Inc. Version 1.0

19 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set \J Bits/s Rate Adjusted This command determines whether or not the negotiated connect speed of the modem forces the adjustment of the speed of the DTE to the modem s speed. \J0: Buffer mode. Error control selected (or not) by \Nn command (default). \J1: Force the max DCE rate to the DTE rate. n = 0 or 1 ERROR Otherwise \Kn Break Control Controls the response of the modem to a break received from the DTE or the remote modem or the \B command. The response is different in three separate cases. The first case is where the modem receives a break from the DTE when the modem is operating in data transfer mode: \K0: Enter on-line command mode, no break sent to the remote modem. \K1: Clear data buffers and send break to remote modem. \K2: Same as 0. \K3: Send break to remote modem immediately. \K4: Same as 0. \K5: Send break to remote modem in sequence with transmitted data. (Default.) The second case is where the modem is in the on-line command state (waiting for AT commands) during a data connection, and the \B is received in order to send a break to the remote modem: \K0: Clear data buffers and send break to remote modem. \K1: Clear data buffers and send break to remote modem. (Same as 0.) \K2: Send break to remote modem immediately. \K3: Send break to remote modem immediately. (Same as 2.) \K4: Send break to remote modem in sequence with data. \K5: Send break to remote modem in sequence with data. (Same as 4.) (Default.) The third case is where there a break is received from a remote modem during a connection: \K0: Clear data buffers and send break to the DTE. \K1: Clear data buffers and send break to the DTE. (Same as 0.) \K2: Send a break immediately to DTE. \K3: Send a break immediately to DTE. (Same as 2.) \K4: Send a break in sequence with received data to DTE. \K5: Send a break in sequence with received data to DTE. (Same as 4.) (Default.) n = 0,1, 2, 3, 4, 5 ERROR Otherwise \Nn Error Control Mode Selection This command determines the type of error control used by the modem when sending or receiving data. \N0: Buffer mode. No error control (same as &Q6). \N1: Direct mode. \N2: MNP* or disconnect mode. The modem attempts to connect using MNP 2 4 error control procedures. If this fails, the modem disconnects. This is also known as MNP reliable mode. Version 1.0 Lucent Technologies Inc. 19

20 AT Command Set June 15, 1998 AT Command Reference (continued) call \N3: V.42, MNP, or buffer (default). The modem attempts to connect in V.42 error control mode. If this fails, the modem attempts to connect in MNP mode. If this fails, the modem connects in buffer mode and continues operation. This is also known as V.42/MNP auto reliable mode (same as &Q5). \N4: V.42 or disconnect. The modem attempts to connect in V.42 error control mode. If this fails, the \N5: \N7: will be disconnected. V.42. MNP or buffer (same as \N3). V.42. MNP or buffer (same as \N3). n = 0, 1, 2, 3, 4,5,7 ERROR Otherwise \Q Local Flow Control Selection \Q0: Disable flow control. Same as &K0. \Q1: XON/XOFF software flow control. Same as &K4. \Q2: CTS-only flow control. This is not supported and the response is ERROR. \Q3: RTS/CTS to DTE (default). Same as &K3. n = 0, 1, 3 ERROR Otherwise \Rn Ring indicator signal off after the telephone call is answered (Compatibility command) \R0: ring indicator signal is off after the telephone call is answered n = 0 ERROR Otherwise 20 Lucent Technologies Inc. Version 1.0

21 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set \Tn Inactivity Timer This command specifies the length of time (in minutes) that the modem will wait before disconnecting when no data is sent or received. A setting of zero disables the timer. Alternatively, this timer may be specified in register S30. This function is only applicable to buffer mode. \Vn \T0: n = ERROR Inactivity timer disabled (default). Otherwise Protocol Result Code \V0: Disable protocol result code appended to DCE speed. \V1: Enable protocol result code appended to DCE speed (default). \V2: Same as \V1. n = 0, 1 ERROR Otherwise \Xn XON/XOFF Pass Through \X0: Modem process XON/XOFF flow control characters locally (default). \X1 Modem passes XON/XOFF flow control characters. n = 0, 1 ERROR Otherwise -Cn Data Calling Tone Data Calling Tone is a tone of certain frequency and cadence as specified in V.25 which allows remote Data/FAX/Voice discrimination. The frequency is 1300 Hz with a cadence of.5 s on and 2 s off. -C0: Disabled (default). -C1: Enabled. n = 0, 1 ERROR Otherwise -V90 = <n> command to enable/disable V.90 and change downstream rate -V90=0 will disable V.90 -V90=1 will enable V.90 Auto Rate (default value) -V90=X - controls the downstream rate -V90? - Shows the current value -V90=? - Shows the range [0-21] See next page for the values of n. Version 1.0 Lucent Technologies Inc. 21

22 AT Command Set June 15, 1998 AT Command Reference (continued) The table below shows the possible values: AT-V90=X Downstream Rate 0 V.90 disabled 1 Auto Rate (default) kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s kbit/s %B View Numbers in Blacklist If blacklisting is in effect, this command displays the numbers for which the last call attempted in the past two hours failed. The ERROR result code appears in countries that do not require blacklisting. 22 Lucent Technologies Inc. Version 1.0

23 Data Addendum June 15, 1998 AT Command Reference (continued) Host-Based Controller Modem AT Command Set %Cn Data Compression Control This command determines the operation of V.42bis and MNP class 5 data compression. Online changes do not take effect until a disconnect occurs first. %C0: V.42bis/MNP 5 disabled. No data compression. %C1: V.42bis/MNP 5 enabled. Data compression enabled (default). n = 0, 1 ERROR Otherwise %En Enable/Disable Auto-Retrain and Fallback/Fall Forward Provides option for the modem to automatically monitor line quality to fall back when line quality is insufficient and to fall forward when line quality is sufficient. %E0: Disable fallback/fall forward %E1: Enable fallback, Disable fall forward %E2: Enable fallback/fall forward (Default) n = 0,1, 2 ERROR Otherwise Version 1.0 Lucent Technologies Inc. 23

24 Host-Based Modem Data Addendum AT Command Set June 15, 1998 Test and Debug AT Commands The following commands are to be used for testing and debugging only and are not meant for general use. &&C Write to / Read from DSP Register AT&&C<loc>,<val> writes the value <val> to DSP register at location <loc>. AT&&C<loc> reads from location <loc>. &&L Line-to-Line Loopback This command provides a loopback for line-to-line. &&R Write to/read from DSP RAM Location AT&&R<loc>,<val> writes the value <val> to DSP RAM location <loc>. AT&&R<loc> reads from location <loc>. &&S Speaker Codec Loopback This command provides a loopback from the microphone to the speaker. %T94 Test External RAM This command AT%T94 is used for testing the external RAM. If the external RAM is good, this command returns PASS. If the external ram is not good, this command returns FAIL. Example : AT%T94 PASS %T125, %T124 - external ram is good Test DSP 56K Version in External Ram The command AT%T125 is used for testing the DSP 56K code version and checksum running in external ram. After issuing AT%T125 the user may then issue ATI4 to get DSP Version or ATI1 to get the DSP checksum. (The command AT%T125 is not valid for ramless version of the DSP 56K code.) The command AT%124 is for internal ram version. #UD Unimodem Diagnostics The reference for the #UD command is Microsoft s Draft Reference Specification rev The Lucent Technologies modem implements a subset of the parameters in that document. #UD is an action command. It does not take parameters. It shall be the last command in the command line. The modem logs aspects of its operation for each call, and saves these results (in volatile memory) until cleared by one of the following events: 1. Power off (or D1 or D3 state entered) 2. Hard reset (e.g. negate DTR with &D3 set, reset button) 3. Soft reset = ATZ or AT&F 4. ATD command issued 5. ATA command issued 6. Automatic answer (e.g. set register S0>0 and ring detected) These results are NOT cleared by changing DTR, V.24 circuit 108.2, if &D0, &D1 or &D2. In response to this command, the modem reports one or more lines of information text as defined below. Information text format is defined in ITU V.25ter: each line is preceded by a <CR><LF> pair, and terminated by <CR><LF>. (Note: as per V.25ter, CR and LF characters may be changed by writing new values to the contents of registers S2 and S3 respectively.) 24 Version 1.0 Lucent Technologies Inc.

25 Data Addendum June 15, 1998 Test and Debug AT Commands (continued) Host-Based Controller Modem AT Command Set The modem may generate a single line or multiple lines, based on modem capabilities and call results, followed by a standard final result code. For example, if call setup failed, only that result is useful. Each information text line shall be formatted as follows, including one or more key=value pairs: DIAG <token key=value [[key=value] [key=value]] > DIAG 5 characters, hex: 44, 49, 41, 47, 20 < left angle bracket (less than sign), hex: 3C token unique 32-bit hexadecimal string 2A4D3263, hex: 32, 41, 34, 44, 33, 32, 36, 33 space space character, hex 20 key single hexadecimal numeric digit, see Table 1 = equal sign, hex: 3D value any string as defined below (Tables 1-3, etc.) > right angle bracket (greater than sign), hex: 3E Unless otherwise noted, all values are hexadecimal numbers. Any numeric values from tables in ITU V.58 are converted to hexadecimal. Multi-digit values are reported MSD first. Leading 0 s may be deleted. The following table 1 includes all the items listed in Microsoft s specification for the AT#UD command. Within these items, the one that has a check mark in the Implemented column is implemented in this release of the modem product. For an item that has an extra option table, please check the corresponding option table to see exactly which option has been implemented. Table 1 - AT#UD Last Call Status Report Format Key value(s) required Definition Implemented 0 2 digits yes Diagnostic Command Specification revision number, digit.digit X 1 Table 2 0-A Call Setup Result code X 2 Table Multi-media mode 3 Table 4 0 DTE-DCE interface mode 4 String yes V.8 CM octet string, same format as V.25ter Annex A, in quotes 5 String yes V.8 JM octet string, same format as V.25ter Annex A, in quotes 6-F Reserved for call negotiation reports 10 2 digits Note 42 Received signal power level, in dbm (0-43) X 11 2 digits Note 4 Transmit signal power level, in dbm (0-17) X 12 2 digits Note 4 Estimated noise level, in dbm (10-90) X 13 2 digits Note 4 Normalized Mean Squared error, 100 (0x64) = minimum inter-symbol distance 14 2 digits Note 4 Near echo loss, in units of db X 15 2 digits Note 4 Far echo loss, in units of db X 16 4 digits Note 4 Far echo delay, in units of ms 17 2 digits Note 4 Round Trip delay, in units of ms X 18 Table 5 Note 4 V.34 INFO bit map 19-1F Reserved for modulation setup and training reports (Note 5) 20 Table 6 Note 6 Transmit Carrier Negotiation Result X 21 Table 6 Note 6 Receive Carrier Negotiation Result X 22 4 digits 0-1F40 Transmit Carrier symbol rate (0-8000) X 23 4 digits 0-1F40 Receive Carrier symbol rate (0-8000) X 24 4 digits 0-FA0 Transmit Carrier frequency (0-4000) 25 4 digits 0-FA0 Receive Carrier frequency (0-4000) 26 4 digits 0-FA00 Initial transmit carrier data rate ( ) X 27 4 digits 0-FA00 Initial receive carrier data rate ( ) X 28-2F Reserved 30 2 digits 0-FF Temporary carrier loss event count 31 2 digits 0-FF Carrier Rate re-negotiation event count 32 2 digits 0-FF Carrier Retrains requested X 33 2 digits 0-FF Carrier Retrain requests granted X 34 4 digits 0-FA00 Final transmit carrier rate X 35 4 digits 0-FA00 Final receive carrier rate X 36-3F Reserved 40 Table Protocol Negotiation Result (Note 7) X 1 Tables are numbered separately within this #UD section to be consistent with the Microsoft specification. 2 Notes refer to notes in the Microsoft specification Version 1.0 Lucent Technologies Inc. 25

26 Host-Based Modem Data Addendum AT Command Set June 15, 1998 Test and Debug AT Commands (continued) 41 3 digits Error Control frame size 42 2 digits 0-FF Error control link timeouts X 43 2 digits 0-FF Error control link NAKs 44 Table Compression Negotiation Result (Note 7) X 45 4 digits Compression dictionary size (Note 7) 46-4F Reserved 50 1 digit 0-2 Transmit flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/ digit 0-2 Receive flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/ digits 0-FFFFFFFF Transmit characters sent from DTE (Note 8) 53 8 digits 0-FFFFFFFF Received characters sent to DTE (Note 8) 54 8 digits 0-FFFF Transmit characters lost (data overrun errors from DTE) (Note 9) 55 8 digits 0-FFFF Received characters lost (data overrun errors to DTE) (Note 9) 56 8 digits 0-FFFFFFFF Transmit Frame count, if error control protocol running (Note 8) X 57 8 digits 0-FFFFFFFF Received Frame count, if error control protocol running (Note 8) X 58 8 digits 0-FFFF Transmit Frame error count, if error control protocol running (Note 9) X 59 8 digits 0-FFFF Received Frame error count, if error control protocol running (Note 9) X 5A-5F Reserved 60 Tables 9-10 Note 10 Termination Cause X 61 2 digits 0-FF Call Waiting event count 62-7F Reserved for future versions of this specification 80-FF Reserved for manufacturer proprietary keys Table 2 - Call Setup Result Codes Code Definition Implemented 0 No previous call (modem log has been cleared since any previous calls) X 1 No dial tone detected X 2 Reorder signal detected, network busy 3 Busy signal detected X 4 No recognized signal detected X 5 Voice detected 6 Text telephone signal detected (see V.18) 7 Data Answering signal detected (e.g. V.25 ANS, V.8 ANSam) X 8 Data Calling signal detected (e.g. V.25 CT, V.8 CI) 9 Fax Answering signal detected (e.g. T.30 CED, DIS) A Fax Calling signal detected (e.g. T.30 CNG) B V.8bis signal detected C-F Reserved Table 6 - gstnmodulationschemeactive from 3.7.2/V.58 Value (hex) Description Implemented 0 V.17 1 V.21 2 V.22 3 V.22bis 4 V.23 Constant Carrier (1200/75) 5 V.23 Switched Carrier (half duplex) 6 V.26bis 7 V.26ter 8 V.27ter 9 V.29 HD A V.32 X B V.32bis C V.34 X D V.34 HD E V.pcm (asymmetric) F V.pcm (symmetric) E-7F Reserved (V.58) 80 X2 81 K56FLEX X 82 V.FC 83 V.32terbo 80-FF Reserved for mfgs 26 Lucent Technologies Inc. Version 1.0

27 Data Addendum June 15, 1998 Test and Debug AT Commands (continued) Host-Based Controller Modem AT Command Set Table 7 - errorcontrol Active from 3.5.2/V.58 Value Description Implemented 0 Disable/none X 1 V.42 LAPM X 2 V.42 Alternative protocol (MNP ) X 3-7F Reserved (V.58) 80 MNP10 81 ECP Enhanced Cellular Protocol 82 ETC 82-FF Reserved for mfgs Table 8 - compressionactive from 3.2.2/V.58 Value Description Implemented 0 None X 1 V.42bis X 2-7F Reserved (V.58) 80 MNP5 X 81-FF Reserved for mfgs Table 9 - Additional callcleared codes (3.6.4/V.58) Code Definition Implemented 1 No Previous call X 2 Call is still in progress X 3 Call Waiting signal detected 4 Delayed - see ETS X Table 10 - callcleared codes from 3.6.4/V callcleared: Indicates that the DCE has gone on hook and that the previously existing network connection has been cleared. These values are hexadecimal, converted from decimal in V.58. Value Description Notes Implemented 0 CauseUnidentified Call setup issues X 1-3 See Table 9 above X A NMSinitiatedDialCall -- Network Management System B NMSinitiatedLeasedLineRestoral C NMSinitiatedRedial D NMSinitiatedDialDisconnect 14 PowerLoss DCE 15 EquipmentFailure 16 FrontPanelDisconnectRequested 17 FrontPanelLeasedLineRestoral 18 AutomaticLeasedLineRestoral 19 InactivityTimerExpired X 1E cct116restoralrequest DTE Interface 1F cct108isoffinhibitsdial 20 cct108turnedoff 28 NoNumberProvided Line Interface 29 BlacklistedNumber X Version 1.0 Lucent Technologies Inc. 27

28 Host-Based Modem Data Addendum AT Command Set June 15, 1998 Test and Debug AT Commands (continued) 2A CallAttemptsLimitExceeded X 2B ExtensionPhoneOffHook 2C CallSetupFailTimerExpired X 2D IncomingCallDetected X 2E LoopCurrentInterrupted 2F NoDialTone X 30 VoiceDetected 31 ReorderTone 32 SitTone 33 EngagedTone 34 LongSpaceDisconnect 3C CarrierLost Signal Converter X 3D TrainingFailed X 3E NoModulationinCommon 3F RetrainFailed X 40 RetrainAttemptCountExceeded 41 GstnCleardownReceived 42 FaxDetected 46 InTestMode Test 47 IntrusiveSelfTestInitiated 50 AnyKeyAbort Call Control X 51 DteHangupCommand X 52 DteResetCommand 5A FrameReject Error Control 5B NoErrorControlEstablished X 5C ProtocolViolation 5D n400exceeded X 5E NegotiationFailed 5F DisconnectFrameReceived 60 SabmeFrameReceived 64 LossOfSynchronization Data Compression 28 Lucent Technologies Inc. Version 1.0

29 AT Command Set June 15, 1998 AT Commands Reference S-Registers S-registers generally affect how the AT commands perform. Contents of the registers can be displayed or modified when the modem is in command mode. To display the value of an S-register: TYPE: ATSn? where n is the register number. PRESS: Enter To modify the value of an S-register: TYPE: ATSn = r where n is the register number, and r is the new register value. PRESS: Enter S0 Auto Answer Ring Number This register determines the number of rings the modem will count before automatically answering a call. Enter 0 (zero) if you do not want the modem to automatically answer at all. When disabled, the modem can only answer with an ATA command. Range: Default: 0 Units: rings S1 Ring Counter This register, Ring Counter, is read only. The value of S1 is incremented with each ring. If no rings occur over a six second interval, this register is cleared. Range: Default: 0 Units: rings S2 AT Escape Character (user defined) This register determines the ASCII valued used for an escape sequence. The default is the + character. The escape sequence allows the modem to exit data mode and enter command mode when on-line. Values greater than 127 disable the escape sequence. Range: Default: 43 Units: ASCII S3 Command Line Termination Character (user defined) This register determines the ASCII values as the carriage return character. This character is used to end command lines and result codes. Range: 0 127, ASCII decimal Default: 13 (carriage return) Units: ASCII Note: This register value is not stored with &W command. 29 Version 1.0 Lucent Technologies Inc.